| A | the rate of CO2 assimilation |
| CEF-PSI | cyclic electron flow around photosystem I |
| gH+ | the conductance of H+ across the thylakoid membranes |
| g s | stomatal conductance |
| NPQ | non-photochemical quenching |
| P700 | the reaction center chlorophyll of photosystem I |
| PEG | poly (ethylene glycol) |
| PET | photosynthetic electron transport |
| PSII | photosystem II |
| PSI | photosystem I |
| QA | the primary quinone electron acceptor of photosystem II |
| RISE | reduction-induced suppression of electron flow |
| ROS | reactive oxygen species |
| Y(II) | the quantum efficiency of photosystem II |
| Y(NO) | the quantum yield of non-regulated and non-photochemical energy dissipation at photosystem II |
| Y(NPQ) | the quantum yield of non-photochemical quenching at photosystem II |
| Y(I) | the quantum efficiency of photosystem I |
| Y(NA) | the quantum yield of the acceptor side limitation of photosystem I |
| Y(ND) | the quantum yield of the donor side limitation of photosystem I |